If I click menu items in inkscape, terminal prints message like this:
(org.inkscape.Inkscape:21914): Gdk-WARNING **: 23:53:14.136: Tried to map a popup with a non-top most parent
All application with this issue I found prints the same message Tried to map a popup with a non-top most parent, including virt-manager, inkscape, geany, gimp.
A workaroud is forcing x11 with GDK_BACKEND=x11 inkscape.
It does it in GTK apps and GIMP does it too.
It doesn’t do that under X.
To fix it in Wayland add “GDK_BACKEND=x11” to environment variables in the Inkscape launcher in the menu. Using Plasma, go to Inkscape in the menu then right click it and select “Edit Application”. Do not forget to click SAVE after you add it in the environment variables box.
There is also a fix on KDE side, which comes in KDE Plasma 6.3.3. (Here is bug report.) It is available in Tumbleweed 20250313 snapshot, I no longer have this issue on plasma after updating.